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THE VIDEO SHELF · javascript event loop

What the heck is the event loop anyway? | Philip Roberts | JSConf EU

Philip Roberts explains the JavaScript event loop, call stack, callbacks and asynchronous behavior with live visualizations using a tool he built. It demystifies terms like non-blocking and single-threaded.

Why HN readers recommended it

HN commenters repeatedly name it as the best explanation of the JS event loop and the first thing to watch before tackling async code.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel
JSConf
Topic
javascript event loop
Format
talk
Level
intermediate
HN recommenders in dataset
16
HN mentions in dataset
20
Recommendation years in dataset
2015–2025

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

  • > How do I take, say JS, and learn it to the point where it really clicks to the point where I can visualize what's going on under the hood when I write programs? Learn how a JS engine works. Any engine will do, although …

    lollipop25 on Hacker News · 2016-03
    In Ask HN: How do I go about truly “understanding” JavaScript, or any language?
  • The corner stone of understand async JavaScript code is a deep understanding what happens under the hood with the Event loop. Philip Roberts has a great lecture called what the heck is the event loop anyway? [1] Once that video is watched once, everything else …

    zappo2938 on Hacker News · 2016-10
    In Understanding Async JavaScript
  • Another event loop talk from Philip Roberts. The tool he created to display the event loop in real time is fantastic. [VIDEO]

    keyvin on Hacker News · 2018-10
    In Ask HN: What are some of the best technical talks you've heard?

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.